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2.5m (8ft) Dell(DE) DAC-Q56DD-400G-2.5M Compatible 400G QSFP-DD Passive Direct Attach Copper Twinax Cable
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2.5m (8ft) Dell(DE) DAC-Q56DD-400G-2.5M Compatible 400G QSFP-DD Passive Direct Attach Copper Twinax Cable


181,00 € (Excl. VAT)

215,39 € (Incl. VAT)

Depending on your delivery address, VAT may vary at Checkout.


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Cable length could be customized in any length as you required.
0.5m (2ft)
1m (3ft)
1.5m (5ft)
2m (7ft)
2.5m (8ft)
3m (10ft)
56 In Stock, 

In Stock, U.S. Warehouse


In Stock, RU Warehouse


In Stock, SG Warehouse


In Stock, DE Warehouse


In Stock, AU Warehouse

Asia Warehouse
The item will be shipped from Asia global warehouse.
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FREE Delivery via TNT Express®, get it by Thu. 30th Sep.

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Dell(DE) DAC-Q56DD-400G-2.5M Compatible 400G QSFP-DD DAC Twinax Cable (2.5-meter, Passive, QSFP-DD to QSFP-DD, 28AWG)

The 400G QSFP-DD DAC primarily enables high-bandwidth 400G links and supports 400G Ethernet rate. It provides a QSFP-DD-to-QSFP-DD copper direct-attach solution. They are suitable for very short links and offer a cost-effective way to establish a 400-Gigabit link between QSFP-400G ports of switches/routers within racks and across adjacent racks.
Product Specifications
Dell(DE) Compatible DAC-Q56DD-400G-2.5M Vendor Name FS
Connector Type QSFP-DD to QSFP-DD Max Data Rate 400Gbps
Minimum Bend Radius 55mm Wire AWG 28AWG
Cable Length 2.5m (8.20ft) Jacket Material PVC (OFNR)
Cable Type Passive Twinax MTBF ≈50 Million Hours
Power Consumption <1.5W Power Supply 3.3V
Temperature 0 to 70°C (32 to 158°F) Protocols 400G Ethernet

Quality Testing Program
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Quality Control SystemLearn more

Take a look at our optics test program and see what truly sets us apart.

Quality Certifications
  • This product provides the lifetime warranty , which aims to reflect our greatest sincerity. Please contact us to learn more.
  • This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
  • This product is in conformity with ISO14001. It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
  • This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
  • REACH is a regulation of the European Union, adopted to improve the protection of human health and the environment through the better and earlier identification of the intrinsic properties of chemical substances. Please contact us to learn more.
  • This product was produced under the requirements of CE to indicate conformity with the essential health and safety. Please contact us to learn more.
  • This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
  • This product is RCM compliant, which indicates compliance with electrical safety, EMC, EME and telecommunications legislative requirements. Please contact us to learn more.
  • This product fully accords with the WEEE, which is an environmental regulation of the European Union and aims to enhance the improvement of collection, treatment and recycling of products at the end of their life. Please contact us to learn more.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.

Direct Connection for 400GbE QSFP-DD to QSFP-DD DAC

1m (3ft) Cisco QDD-400-CU1M Compatible 400G QSFP-DD Passive Direct Attach Copper Twinax Cable

115,00 €

High Performance 400G QSFP-DD DAC

400G QSFP-DD DAC is the most power-efficient connectivity solution for short distance interconnects, because it is passive and has the characteristics of high reliability, low insertion loss and the lowest latency.

Dell High Performance 400G QSFP-DD DAC

Superior Workmanship of Direct Attach Copper Cable
Dell Foam Skin Technology
Foam Skin Technology

The special foam skin technology makes DAC higher foam degree, higher flexibility and smaller bending radius. Ensure stable transmission performance.

EMC Shielding

Electromagnetic shielding keeps the low crosstalk and high signal integrity, which ensures consistent transmission.

EMC Shielding
Dell Superior Insertion Loss
Superior Insertion Loss

Insertion loss is 10% lower than the industry average. Lower insertion loss, reducing the loss of optical power caused by the optical devices.

High-Order Modulation PAM4

400G DAC adopts 8x 50G PAM4 modulation. Its transmission efficiency is doubled compared to the NRZ signal, effectively reducing costs.

High-Order Modulation PAM4

Test Bed

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